5: Basic Digital Multimeter (DMM) Operation Series 3700 System Switch/Multimeter
-50 Document Number: 3700S-900-
3. Press the CONFIG key and then the DMM key. The "CONT ATTR MENU" will open.
4. Set threshold voltage:
Turn the wheel to scroll to the "THRESHOLD" menu item (right most menu item) and press the
ENTER key.
Using the wheel, dial in the desired voltage to be used as a threshold (0V–303V.
Press the ENTER key to set.
Press the EXIT key to leave the "FREQ ATTR MENU."
5. Apply the AC voltage(s) to be measured (see CAUTION).
NOTE When observing the displayed readings, if the “Overflow” message is displayed, select
a higher range until a normal reading is displayed. Use the lowest possible range for
the best resolution.
6. Press the TRIG key and observe the displayed reading.
7. To measure other switching channels, repeat steps 5 and 6.
8. When finished, press the OPENALL key to open all channels.
NOTE Also see the bus command dmm.threshold for more information on threshold
attributes.
Continuity testing
The Series 3700 can test continuity using the 2-wire 1k range with a user selectable threshold
resistance level (1 to 1000). When the measured circuit is below the set threshold level, the
instrument will display the resistance readings. When the measured circuit is above the
threshold level, the instrument will display the message “OPEN.”
NOTE The reading rate for continuity is fixed at FAST (0.01 PLC). Limits and digital outputs
cannot be used when testing continuity with the continuity (CONT) function. If you
need to use these operations, use the 2 function to test continuity.
NOTE The continuity function does not support REL. Use mx + b, with b as an offset, to
compensate for losses due to cable lead resistance.
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